Calendar: Fix reset session filter - refs BT#19497

main/inc/lib/agenda.lib.php

@@ -3435,7 +3435,7 @@ class Agenda
                         ['id' => 'session_id', 'onchange' => 'submit();']
                     );
 
-                    $form->addButtonReset(get_lang('Reset'));
+                    $form->addButton('reset', get_lang('Reset'), 'eraser');
                     $form = $form->returnForm();
                 }
             }

main/template/default/agenda/month.tpl

@@ -30,8 +30,10 @@ $(function() {
     var defaultStartDate = (cookieData && cookieData.start) || moment.now();
 
     // Reset button.
-    $("button[type=reset]").click(function() {
-        $("#session_id").find('option').removeAttr("selected");
+    $('form#form-search #form-search_reset').on('click', function (e) {
+        e.preventDefault();
+
+        $("#session_id").val('0').selectpicker('refresh').trigger('change');
     });
 
 	$("#dialog-form").dialog({